| (19) |
 |
|
(11) |
EP 1 114 583 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
19.09.2001 Bulletin 2001/38 |
| (43) |
Date of publication A2: |
|
11.07.2001 Bulletin 2001/28 |
| (22) |
Date of filing: 12.12.2000 |
|
|
| (84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
| (30) |
Priority: |
20.12.1999 US 467809
|
| (71) |
Applicant: Ciba Specialty Chemicals Holding Inc. |
|
4057 Basel (CH) |
|
| (72) |
Inventor: |
|
- Stadler, Urs Leo
Madison, NJ 07940 (US)
|
|
| |
|
| (54) |
Biocide-Polyester concentrates and biocidal compositions prepared therefrom |
(57) Concentrates of various classical biocides in a polyester carrier resin when incorporated
into a substrate resin, preferably a polyolefin such as polypropylene or polyethylene,
provide the substrate polymer which biocidal activity with superior resistance to
discoloration (yellowing) than when the biocide is directly incorporated into the
substrate polymer as a powder at the same total concentration.